Finite-element analyses of the pressing of ceramic components

Reference Presenter Authors
(Institution)
Abstract
09-118 Caiuã Caldeira Melo Melo, C.C.(Universidade Federal de São Carlos); Canto, R.B.(Universidade Federal de São Carlos); Maginador, R.V.(Universidade Federal de São Carlos); Sciuti, V.F.(Universidade Federal de São Carlos); Uniaxial pressing and isostatic pressing are widely applied to produce ceramic parts. These processes are generally used in industry due to the low cost, the high productivity and the possibility to produce complex shaped parts. To obtain a green compact with uniform properties, e.g. density distribution, and to produce parts that do not exceed a certain critical damage during ejection and handling up to firing are well-known challenges in the industry. Once trial-and-error methods to design new ceramic parts are costly and time-consuming, finite-element analysis can reduce the development time and the production cost. Finite-element analysis of powder pressing requires a precise constitutive model, whose the identification is a complex procedure. The Drucker-Prager Cap is a constitutive model included in the commercial finite-element software Abaqus, which is generally used to simulate powder pressing. Using the Drucker-Prager Cap model calibration from previous studies, this work demonstrates some case studies, in which finite element analysis can contribute to a better understanding of the pressing and its process variables.
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